Rotary converter



circuit resistz 11cc l9 are connected to 22 and 2f the ho:

if the coi'ivertcr. The

arms and L 1' nd/l 0.: "a MA on jy Il -1y co lit to 1 ether 13, lt and 15 connected acrrtiss tie serr',

.u/ :5 field wmdm 2-3 whici ECG:

comma V sii'el out out resistances 6, 1?, 18 and 19 as are the arms and 2?, ho; the

in the auxiliary commutat field Winding; r idly cohherted w: circuit upon an increase in the load on the e "voltage app ied to tield W lm rotary converter and cut them in a ain with simultaneo sly varied and reersed.

a decrease in the load on the converter. The sets of arms may he ope 1 relays 12 13, 1. and 15 are shown as hv provided with diherent numbers of 4 relay 12 with the least iii'u'nher and rel with the greatest number. lt will therefore take mulch higher voltage to ope 19 than relay 15. These relays are o ereted by the voltage drop ac nose the mutating field Winding 3 and t ereh pend upon the load on the rota. U l have found it desirable to have all sistances 151 1'7, and 19 in the (emf-mutating cld ivihding; circa. of full load is being delirered h i'erter Wl'lGlQUPOD relay 15 operates to and thus streng the auxiliary commutating llclay let operates at short-chclfit ros'steiice 18,. re-

i t. .teld o5 pro uced .Ylillii in t ll at 115% ct full load and relay I i at 135% of tull load at which lo delivered L out o? aw moved or relays" the mid po ition these resistances will he cut If desired a greater number b employed which cut 1 1 and smaller increments of load. out I rwie by found that four were sufiicleiit tor cimctical i1 operating conditions.

The set of l'ES'lSttillCQS 10 is connected to shove t two rows oi: contacts 20 and 21 the tern: {331d raz'iatmis lot the 4 1" the auxiliair comn'iutatine' th Y J c:

rigidly connected together and ei tWo rows of contacts 2 and 21, re

When these rter.

hand 0 ntacts, the toll v r and 1 he (idis applied to the field field winding circu t rection. By moth: the l on the converter.

cent contacts, a tract on of the vo the hon 5 mains is applied to the Win it olvri 2:5. the arms on jage the middle voltage is applied to the Winding; ther movement the arms toward to cover applies a rolto 'e LO the wind J .mom in the opposite direction to :hat \h ch as that do not do the claim moahhca E ions ot applied when the arms enga ,cc. coliiac'ts to of I y invention.

the le 5 of the middle and when the arms ll hat cl engage the extreme right hand contacts full cure voltage is apolied in the opposite '1 l .i St

to that applied when the arms tho 7 extreme left hand contacts. vertex Similarly the set of resistances 1.3.. connected to two rows of contacts 2% and 25 a 1d the terminals of the field Winding ot the booster are connected to arms 26 add i)? W which are rigidly connected together mo comic. engage the rows of contacts 24 25. .i ho vol -age applied to the field 'Winciag varied and reversed in the same Way as described above in connection with field commuta ionfieldwindins:vvhenth booster rota t converter a coinrnutatiz operates lerator and assists saic series comniutating field Winding when the booster operates motor, and means pendent on the load on said converter for further varying the fiell produced by said auxiliary commutatinp' field Winding.

9. In combination, directcurrent mains a. rotary converter having a s ies COII13111- toting fi ld Winding and an, auxiliary coinmutating field winding; a booster mechanically connected to said converter having; a field Winding two sets of resistances connected across said mains said auxiliary co1nmutating; field Winding of said converter be ing connected across one of said of sistances, said field winding: of said booster lJGlllf connected across the other of: said of resistances means for simultmieously changing the connections of: said windings to said resistances and for simultaneousl'vreversing; said windings. and means dependent on the lOSf on said converter for further varying; the field produced by auxiliary commutating field Winding.

10. lln combination, di. current in: l I a rotary converter, a. series commutmmcj field Winding on said rotary converter, an auxiliary commututing field WlDCllBfl' on said converter connected to said mains, a booster mechan cally connected. to said converter, :1 field Windi vtor said booster connected to said mains in parallel with said auxiliary coins-imitating field Winding means tor simultaneously varying the voltage applied to said booster field Winding and the voltage ap jalied to the aulnliury coniniutr ting; field Winding); on said converter and for simultaneously reversing the booster field Windfield ing the auxiliary commutat-i: winding" so 1 h a t said auxiliary coininut field win/lin opposes said series coinInuta-.'- lug; field Winding when the booster operates as a generator and assists said series commuwhen the booster oper toting; field Wind ates as a motor an means dependent on the load on said converter tor varying the current in said auxiliary coininutatingz; field winding.

11. ln combination direct current mains. a rotary converter having a series commit vfield Windi. and an surf iory COD1H111- toting field Vslt'lillllfj a booster mechanically connected said converter having field windii'i q', means for simultaneously var; and si ultaucouslv reversing the volt applied said auzo lin combination, direct current mains,

rotary converter,

field Winding on said I i g field Winding on so I auxiliary cominutati it converter connected to mechanically connected to said converter, field Winding for said booster connected to said mains in parallel with said 7 tiliary coninnitating field Winding means multaneously vsryin the voltage applied to said booster field minding '1 :l the volta c l to tie auxiliary corrnutating field on said converter and I01 simulg the booster field Winding coniniutating field ivimlinggauxiliary comrnutating field H opposes said series commutator;- ivinding ivh i the booster operates 'enerator-and assists said series connnutotield Winding when the booster operates as a motor resistances in the circuit of the auxiliaiy con'unutating field Winding, and omens dependent on the load on said oonvcrter for cutting in and out said resistances in the auxiliary commutating field Winding; circuit.

13. In combination, direct current mains, a rotary converter having" a series coinrou toting; field Winding and an euxiliary coin mutating field windi. boost-er inechanically connected to said convert having a field Winding, two sets of resistances con nected across said mains, said auxiliary coni- Inutating field Winding of said converter being connected across one of said sets of re sistances, said field winding of said booster being connected across the other of said sets of resistances, means for simultaneously changing the connections of said Winding-s to said resistances and for simultaneously reversing said windings resistances the circuit oi? the auxiliary connnutating field Winding and dependent on the load on id com rter for out ing in and out. said resistances in the aui'ciliary voronuitating iliary coininutating' field Winding, and means connected said series cor mutating field Winding for cutting in and out said resistances in auxiliary C0111 mutating: field ulnding circuit,

15. In coinbination direct current mains, a rotary converter, a series coinniutating field Winding on said rotary converter, an auxiliary cominutating field Winding on said resistances cun- 2211x111 :1 1' com-- New 8 of resud conv said set and f0 3 boos 13 cf said boos: the? of said sets 7 and. smsg connected 9161 Winding;

511111111 1 fjgsusll tin c0111 mutating mxlhcu comm maeously z'ucmtes :emes c0 resistances Lid Winding reversing resistancw out sand )osier 011- field nuatingg field winulingzi c-as in circuit.

G 4 B 6 S lmwnnw 11 1.0, m1. T I we L 0 mt & 1O

Him-m g mai ns,

mmu-

ion dime V' itmsses BENJAMIN B. HUN,

WV. :HOW'GATE. 

